/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Operations/IntrinsicTriangulationMesh.h
enumerable object for valid triangle indices suitable for use with range-based for, ie for ( int i :TriangleIndicesItr())
[FRefCountVector::IndexEnumerable](API\Runtime\GeometryCore\Util\FRefCountVector\IndexEnumerable) TriangleIndicesItr() const